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TAP::Parser::SourceHandler::Perl(3pm) Perl Programmers Reference Guide TAP::Parser::SourceHandler::Perl(3pm)



NAME
       TAP::Parser::SourceHandler::Perl - Stream TAP from a Perl executable

VERSION
       Version 3.23

SYNOPSIS
         use TAP::Parser::Source;
         use TAP::Parser::SourceHandler::Perl;

         my $source = TAP::Parser::Source->new->raw( \'script.pl' );
         $source->assemble_meta;

         my $class = 'TAP::Parser::SourceHandler::Perl';
         my $vote  = $class->can_handle( $source );
         my $iter  = $class->make_iterator( $source );

DESCRIPTION
       This is a Perl TAP::Parser::SourceHandler - it has 2 jobs:

       1. Figure out if the TAP::Parser::Source it's given is actually a Perl script ("can_handle").

       2. Creates an iterator for Perl sources ("make_iterator").

       Unless you're writing a plugin or subclassing TAP::Parser, you probably won't need to use this module
       directly.

METHODS
   Class Methods
       "can_handle"

         my $vote = $class->can_handle( $source );

       Only votes if $source looks like a file.  Casts the following votes:

         0.9  if it has a shebang ala "#!...perl"
         0.75 if it has any shebang
         0.8  if it's a .t file
         0.9  if it's a .pl file
         0.75 if it's in a 't' directory
         0.25 by default (backwards compat)

       "make_iterator"

         my $iterator = $class->make_iterator( $source );

       Constructs & returns a new TAP::Parser::Iterator::Process for the source.  Assumes "$source->raw"
       contains a reference to the perl script.  "croak"s if the file could not be found.

       The command to run is built as follows:

         $perl @switches $perl_script @test_args

       The perl command to use is determined by "get_perl".  The command generated is guaranteed to
       preserve:

         PERL5LIB
         PERL5OPT
         Taint Mode, if set in the script's shebang

       Note: the command generated will not respect any shebang line defined in your Perl script.  This is
       only a problem if you have compiled a custom version of Perl or if you want to use a specific version
       of Perl for one test and a different version for another, for example:

         #!/path/to/a/custom_perl --some --args
         #!/usr/local/perl-5.6/bin/perl -w

       Currently you need to write a plugin to get around this.

       "get_taint"

       Decode any taint switches from a Perl shebang line.

         # $taint will be 't'
         my $taint = TAP::Parser::SourceHandler::Perl->get_taint( '#!/usr/bin/perl -t' );

         # $untaint will be undefined
         my $untaint = TAP::Parser::SourceHandler::Perl->get_taint( '#!/usr/bin/perl' );

       "get_perl"

       Gets the version of Perl currently running the test suite.

SUBCLASSING
       Please see "SUBCLASSING" in TAP::Parser for a subclassing overview.

   Example
         package MyPerlSourceHandler;

         use strict;
         use vars '@ISA';

         use TAP::Parser::SourceHandler::Perl;

         @ISA = qw( TAP::Parser::SourceHandler::Perl );

         # use the version of perl from the shebang line in the test file
         sub get_perl {
             my $self = shift;
             if (my $shebang = $self->shebang( $self->{file} )) {
                 $shebang =~ /^#!(.*\bperl.*?)(?:(?:\s)|(?:$))/;
                 return $1 if $1;
             }
             return $self->SUPER::get_perl(@_);
         }

SEE ALSO
       TAP::Object, TAP::Parser, TAP::Parser::IteratorFactory, TAP::Parser::SourceHandler,
       TAP::Parser::SourceHandler::Executable, TAP::Parser::SourceHandler::File,
       TAP::Parser::SourceHandler::Handle, TAP::Parser::SourceHandler::RawTAP



perl v5.16.2                                     2012-10-25            TAP::Parser::SourceHandler::Perl(3pm)